US 4,754,521 AGranted

Street sweeper machine for trash collecting

AssigneeDulevo S.p.A.

InventorSergio Zoni

Life of this patent

Estimating the term…

Loading patent…

Abstract

A machine with a frame supporting two side brushes downwardly, a center roller, and an auxiliary front brush movable on command in a crosswise direction to the frame, and upwardly a driver's cab, a trash container, a water tank and a trash conveyor. The water tank and trash conveyor are of reduced dimensions (i.e., short) with respect to the machine lengthwise direction are flattened and inserted between the cab and container. The conveyor has an open structure which extends vertically in an air-tight transport channel between a top end in communication with the container via an opening in the container and a bottom end placed forwardly close to the center roller. A dust suction unit is also provided in communication with the container interior, to draw in dust raised by said brushes through the opening into the trash container from a transport channel between the bottom and top ends of the conveyor.

Claims12

Dependent claims

A street sweeper machine for collecting trash, comprising

a frame having a forward part and a rear part,
wheels which support and move the frame,
a driver's cab carried on said forward part of said frame, a trash container supported on said rear part of said frame and having a partition wall facing said cab and an opening formed through said partition wall,
a water storage tank and a trash conveyor supported on said frame and being inserted between said cab and container,
power driven rotary brushes supported on said frame in contact with a surface to be swept, for directing said trash to said trash conveyor,
said conveyor extending between a top end thereof in communication with said opening in said container and a bottom end thereof substantially level with said brushes,
said conveyor with said bottom end thereof being adapted to receive trash being conveyed from the brushes themselves, and a dust suction unit supported on said frame and in communication with the interior of said container for drawing in through said opening dust raised by said brushes and from said conveyor.

4 more elements

Dependencies are inferred from the claim text.